uni·​cel·​lu·​lar | \ ˌyü-ni-ˈsel-yə-lər How to pronounce unicellular (audio) \

Definition of unicellular

: having or consisting of a single cell unicellular microorganisms

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Examples of unicellular in a Sentence

Recent Examples on the Web Before long, most of our food will come neither from animals nor plants, but from unicellular life. Aric Jenkins, Fortune, "Facebook Drops the Mic on Political Advertising," 9 Jan. 2020 The beetle is so tiny that it is dwarfed by some unicellular organisms, which are usually microscopic. Lauren M. Johnson, CNN, "Never too small to make a difference: A new species of beetle named in honor of Greta Thunberg," 25 Oct. 2019 How did life make this spectacular leap from unicellular simplicity to multicellular complexity? Quanta Magazine, "Where Animals Come From," 29 July 2014 His results showed that the region seethed with mats of photosynthesizing, unicellular life forms long before the Cambrian explosion. Peter Byrne, Quanta Magazine, "Early Life in Death Valley," 24 Apr. 2014 Red tides are caused by a type of unicellular algae known as a dinoflagellate. David Grossman, Popular Mechanics, "What Are Red Tides and Why Are They Getting Worse?," 14 Aug. 2018 But how could habituation happen in unicellular organisms without neurons? Katia Moskvitch, WIRED, "Slime Molds Remember—But Do They Learn?," 14 July 2018 Single cells started to band together, and a world of formless, unicellular life was on course to evolve into the riot of shapes and functions of multicellular life today, from ants to pear trees to people. Katie Langin, Science | AAAS, "Top stories: Chocolate money, the rise of multicellularity, and pet rabbit brains," 29 June 2018 The gulf between unicellular and multicellular life seems almost unbridgeable. Elizabeth Pennisi, Science | AAAS, "The momentous transition to multicellular life may not have been so hard after all," 28 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unicellular.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unicellular

1858, in the meaning defined above

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Time Traveler for unicellular

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The first known use of unicellular was in 1858

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Cite this Entry

“Unicellular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unicellular. Accessed 22 Oct. 2020.

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More Definitions for unicellular


uni·​cel·​lu·​lar | \ ˌyü-ni-ˈsel-yə-lər How to pronounce unicellular (audio) \

Medical Definition of unicellular

: having or consisting of a single cell unicellular microorganisms

Other Words from unicellular

unicellularity \ -​ˌsel-​yə-​ˈlar-​ət-​ē How to pronounce unicellularity (audio) \ noun, plural unicellularities

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